This has been mentioned in a Hadith recorded by Imam Ahmad in his Musnad on the authority of Kathir bin Murrah, who reported from Qays Al-Judhami, may Allah be pleased with him, that Allah's Messenger said,

As the first drop of his blood gushes forth, a martyr is granted six merits: all of his sins are forgiven, he is shown his place in Paradise, he is married to wide-eyed Huris, he is secured from the great fear (on Judgement Day) and the torment of the grave, and he is adorned with the adornments of Iman. Ahmad was alone in recording this Hadith.

Abu Ad-Darda', may Allah be pleased with him, reported that Allah's Messenger said,

يُشَفَّعُ الشَّهِيدُ فِي سَبْعِينَ مِنْ أَهْلِ بَيْتِه

A martyr is allowed to intercede for seventy members of his household.

This was recorded by Abu Dawud, and there are numerous other Hadiths mentioning the merits of the martyrs.

Indeed, those who have believed and done righteous good deeds, their Lord will guide them because of their Faith: beneath them rivers will flow in the Gardens of Pleasure.(10:9)

Allah says,

وَيُصْلِحُ بَالَهُمْ

and amend their condition. meaning, their situation and affairs.

وَيُدْخِلُهُمُ الْجَنَّةَ عَرَّفَهَا لَهُمْ

And (He will) admit them to Paradise, which He has made known to them. It means that He has acquainted them with Paradise and guided them to it.

Mujahid said: "The people of Paradise will be guided to their houses and dwellings and whatever sections Allah has ordained for them in it. They will not make mistakes in this, nor will they ask anyone for directions to their dwellings -- as if they had dwelt in it from the time they were first created.''

Al-Bukhari recorded from Abu Sa`id Al-Khudri, may Allah be pleased with him, that Allah's Messenger said,

After the believers securely pass the Fire (on the Day of Judgement), they will be held back upon a bridge between Paradise and the Fire. There, they will have any acts of injustice that they committed against one another in the life of this world rectified. After they are completely purified and cleansed (from injustice), they will be admitted into Paradise. By the One in Whose Hand is my soul, each one of them will find his way to his dwelling in Paradise better than he found his way to his dwelling in the worldly life.

كُتِبَ عَلَيْكُمُ الْقِتَالُ وَهُوَ كُرْهٌ لَّكُمْ وَعَسَىٰ أَن تَكْرَهُوا شَيْئًا وَهُوَ خَيْرٌ لَّكُمْ وَعَسَىٰ أَن تُحِبُّوا شَيْئًا وَهُوَ شَرٌّ لَّكُمْ وَاللَّهُ يَعْلَمُ وَأَنتُمْ لَا تَعْلَمُونَ"Jihad (holy fighting in Allah's Cause) is ordained for you (Muslims) though you dislike it, and it may be that you dislike a thing which is good for you and that you like a thing which is bad for you. Allah knows but you do not know" - Quran 2:216

jesus or Yeshua goes to prepare a house for his followers, which is mentioned at the beginning of john 14. It is based on belief alone that assures a place in heaven not martyrdom. In christianity ones love, however, is measured on whether or not one would die for a friend, but those risks happen because man is sinful not because man is SEEKING a SWORD FIGHT to get to heaven. So the motivation to die a martyr in christianity is for a better resurrection , but not to assure ones self, entrance into heaven.